Alert archive / New Jersey / Special Marine Warnings in 2017

Special Marine Warning 26, NWS Philadelphia/Mount Holly

April 29, 2017

NWS Philadelphia/Mount Holly issued this special marine warning at Apr 29, 2017, 6:16 AM EDT. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 29, 2017, 6:16 AM EDT (10:16 UTC)
Expired: Apr 29, 2017, 6:45 AM EDT
In force: 29 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 40.0 mph

What forecasters said that day

The local office's own words before this special marine warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this special marine warning went out at Apr 29, 5:54 AM EDT, 22 minutes earlier.

Area forecast discussion, Apr 29, 5:54 AM EDT, 22 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Apr 29, 5:12 AM EDT, 1 hour 4 minutes before

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
512 AM EDT Sat Apr 29 2017

DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-055-
060>062-070-071-101>106-300915-
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Sussex-Warren-Morris-Hunterdon-Somerset-
Middlesex-Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-
Camden-Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton-
Delaware-Philadelphia-Western Chester-Eastern Chester-
Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks-
512 AM EDT Sat Apr 29 2017

This Hazardous Weather Outlook is for central Delaware, northern
Delaware, southern Delaware, northeast Maryland, central New
Jersey, northern New Jersey, northwest New Jersey, southern New
Jersey, east central Pennsylvania, northeast Pennsylvania and
southeast Pennsylvania.

.DAY ONE...Today and Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ430-431-450>455-300915-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
512 AM EDT Sat Apr 29 2017

This Hazardous Weather Outlook is for Atlantic coastal waters and
Delaware Bay Waters.

.DAY ONE...Today and Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Apr 29, 3:20 AM EDT, 2 hours 56 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
320 AM EDT SAT APR 29 2017

PAZ060>062-101-103-105-290800-
Upper Bucks-Lehigh-Western Montgomery-Western
Chester-Northampton-Berks-
320 AM EDT SAT APR 29 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT BERKS...NORTHWESTERN
MONTGOMERY...LEHIGH...WEST CENTRAL BUCKS...NORTH CENTRAL CHESTER AND
CENTRAL NORTHAMPTON COUNTIES...

At 318 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Fredericksburg to Yorklyn. Movement
was east at 55 mph.

Winds in excess of 30 mph and half inch hail are possible with these
storms.

Locations impacted include...
Allentown, Reading, Bethlehem, Pottstown, Emmaus, Wyomissing,
Northampton, Nazareth, Birdsboro, Kutztown, Hamburg, Fleetwood,
Sinking Spring, Laureldale, East Greenville, Womelsdorf, Bath,
Wernersville, Newmanstown and Walnutport.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4052 7634 4052 7625 4058 7605 4057 7602
      4064 7599 4083 7524 4008 7562 4003 7594
      4011 7594 4014 7588 4036 7621 4037 7623
      4049 7643
TIME...MOT...LOC 0718Z 254DEG 57KT 4047 7641 4000 7665

SFJ

Special weather statement, Apr 29, 3:39 AM EDT, 2 hours 37 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
339 AM EDT SAT APR 29 2017

DEZ002-003-MDZ020-NJZ024-290815-
Inland Sussex-Kent-Caroline-Atlantic Coastal Cape May-
339 AM EDT SAT APR 29 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL SUSSEX...SOUTHERN
KENT...NORTHEASTERN CAROLINE AND SOUTHWESTERN CAPE MAY COUNTIES...

At 338 AM EDT, a strong thunderstorm was located near Harrington, or
13 miles south of Dover, moving east at 45 mph.

Winds in excess of 30 mph and pea size hail are possible with this
storm.

Locations impacted include...
Milford, Denton, Harrington, Greensboro, Oakland, Ridgely, Bowers,
Viola, Big Stone Beach, Sandtown, Andrewsville, Felton, Frederica,
Houston, Magnolia, Farmington, Riverview and Woodside East.

Heavy rain is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 3901 7590 3909 7540 3907 7541 3903 7534
      3898 7531 3895 7532 3894 7531 3893 7532
      3887 7525 3883 7590
TIME...MOT...LOC 0738Z 263DEG 39KT 3897 7551

SFJ

Special weather statement, Apr 29, 3:51 AM EDT, 2 hours 25 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
351 AM EDT SAT APR 29 2017

DEZ001-NJZ009-010-015-017-PAZ060-061-070-071-101>106-290830-
New Castle-Mercer-Hunterdon-Somerset-Gloucester-Lower
Bucks-Lehigh-Eastern Montgomery-Western Chester-Philadelphia-Upper
Bucks-Western Montgomery-Delaware-Eastern Chester-Berks-
351 AM EDT SAT APR 29 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTH CENTRAL NEW
CASTLE...SOUTHEASTERN HUNTERDON...NORTHWESTERN MERCER...NORTHWESTERN
GLOUCESTER...SOUTHWESTERN SOMERSET...SOUTHEASTERN BERKS...
MONTGOMERY...SOUTHEASTERN LEHIGH...BUCKS...CHESTER...NORTHWESTERN
PHILADELPHIA AND DELAWARE COUNTIES...

At 351 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Laureldale to near Quarryville.
Movement was east at 60 mph.

Winds in excess of 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Philadelphia, Reading, West Chester, Norristown, Chester, Pottstown,
Phoenixville, Lansdale, West Norriton, East Norriton, Coatesville,
Yeadon, Westtown, Wyomissing, Quakertown, Perkasie, Doylestown,
Byram, Downingtown and Conshohocken.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3985 7602 3987 7599 3992 7600 3994 7598
      3995 7600 4004 7593 4011 7594 4014 7588
      4024 7603 4047 7590 4054 7475 3983 7534
      3980 7605
TIME...MOT...LOC 0751Z 269DEG 52KT 4036 7585 3986 7617

SFJ

Special weather statement, Apr 29, 4:14 AM EDT, 2 hours 2 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
414 AM EDT SAT APR 29 2017

NJZ008>010-012-013-015-PAZ105-106-290900-
Morris-Hunterdon-Western Monmouth-Somerset-Middlesex-Mercer-Lower
Bucks-Upper Bucks-
414 AM EDT SAT APR 29 2017

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN MORRIS...
HUNTERDON...NORTHERN MERCER...SOMERSET...CENTRAL MONMOUTH...MIDDLESEX
AND CENTRAL BUCKS COUNTIES...

At 414 AM EDT, a strong thunderstorm was located over Tinicum, or 19
miles south of Easton, moving east at 55 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
New Brunswick, Perth Amboy, Morristown, Somerville, Somerset, Edison,
Old Bridge, East Brunswick, Bridgewater, South Brunswick, Sayreville,
North Brunswick, Marlboro, Madison, Middlesex, Princeton, Florham
Park, East Hanover, Bound Brook and Manville.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4029 7521 4052 7527 4086 7436 4081 7435
      4076 7438 4075 7436 4067 7446 4066 7445
      4066 7441 4065 7440 4060 7446 4061 7431
      4059 7429 4050 7426 4050 7428 4046 7425
      4030 7421
TIME...MOT...LOC 0814Z 257DEG 48KT 4042 7510

SFJ

Special weather statement, Apr 29, 4:22 AM EDT, 1 hour 54 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
422 AM EDT SAT APR 29 2017

DEZ001-NJZ016>020-022-027-PAZ070-071-102-104-290900-
New Castle-Northwestern
Burlington-Salem-Camden-Ocean-Atlantic-Southeastern
Burlington-Gloucester-Eastern Montgomery-Delaware-Eastern
Chester-Philadelphia-
422 AM EDT SAT APR 29 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN NEW
CASTLE...NORTHWESTERN ATLANTIC...NORTHERN SALEM...WEST CENTRAL
OCEAN...CAMDEN...GLOUCESTER...CENTRAL BURLINGTON...SOUTHEASTERN
MONTGOMERY...EAST CENTRAL CHESTER...PHILADELPHIA AND DELAWARE
COUNTIES...

At 422 AM EDT, radar indicated strong thunderstorms were located
along a line extending from Radnor Township to Wilmington Manor.
Movement was east at 55 mph.

Winds in excess of 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Philadelphia, Camden, Wilmington, Gloucester City, Cherry Hill,
Evesham, Mount Laurel, Chester, Willingboro, Deptford, Voorhees,
Medford, West Deptford, Glassboro, Lindenwold, Hammonton, Pennsville,
Lumberton, Bellmawr and Yeadon.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3960 7468 3959 7543 3960 7546 3962 7545
      3966 7548 3960 7548 3961 7557 3962 7557
      3966 7552 3971 7549 3972 7551 3967 7555
      3963 7561 3960 7562 3960 7568 4008 7541
      3999 7436
TIME...MOT...LOC 0822Z 257DEG 49KT 4005 7538 3969 7557

SFJ

Special weather statement, Apr 29, 4:56 AM EDT, 1 hour 20 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
456 AM EDT SAT APR 29 2017

NJZ012>015-018>020-026-027-PAZ106-290945-
Northwestern Burlington-Eastern Monmouth-Camden-Coastal
Ocean-Ocean-Western Monmouth-Middlesex-Southeastern
Burlington-Mercer-Lower Bucks-
456 AM EDT SAT APR 29 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT OCEAN...EAST CENTRAL
CAMDEN...MERCER...BURLINGTON...MONMOUTH...SOUTHERN MIDDLESEX AND
SOUTHEASTERN BUCKS COUNTIES...

At 456 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Clearbrook Park to near Tabernacle.
Movement was east at 65 mph.

Winds in excess of 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Toms River, Trenton, Long Branch, Asbury Park, Lakewood, Middletown,
Old Bridge, Jackson, Howell, East Brunswick, Marlboro, Manalapan,
Ewing, Medford, Tinton Falls, Holmdel, Lumberton, Princeton, Red Bank
and Florence.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4032 7397 4007 7404 4006 7412 4005 7409
      4005 7405 3979 7410 4001 7409 3999 7414
      3999 7411 3981 7417 3977 7410 3980 7417
      3977 7419 3977 7489 4033 7482 4045 7410
      4041 7402 4046 7399 4038 7401
TIME...MOT...LOC 0856Z 263DEG 56KT 4033 7449 3984 7477

SFJ

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 29, 2:54 AM EDT	Special Weather Statement	PHI	Burlington	36 min
Apr 29, 4:14 AM EDT	Special Weather Statement	PHI	Hunterdon, Middlesex, Somerset	46 min
Apr 29, 4:20 AM EDT	Severe Thunderstorm Warning	PHI	Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Somerset	40 min
Apr 29, 4:22 AM EDT	Special Weather Statement	PHI	Burlington, Camden, Gloucester	38 min
Apr 29, 4:29 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset	4 hr
Apr 29, 4:32 AM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset	43 min
Apr 29, 4:56 AM EDT	Special Marine Warning	PHI		64 min
Apr 29, 4:56 AM EDT	Special Weather Statement	PHI	Burlington, Mercer, Monmouth, Ocean	49 min
Apr 29, 5:16 AM EDT	Special Marine Warning	PHI		29 min
Apr 29, 7:04 AM EDT	Areal Flood Warning	PHI	Hunterdon, Somerset	4 hr
Apr 29, 3:12 AM EDT	Areal Flood Advisory	PHI	Berks	4 hr
Apr 29, 3:20 AM EDT	Special Weather Statement	PHI	Berks, Lehigh, Northampton	40 min
Apr 29, 3:51 AM EDT	Special Weather Statement	PHI	Berks, Bucks, Chester, Delaware, Montgomery	39 min
Apr 29, 2:57 AM EDT	Special Weather Statement	PHI	Queen Anne's	48 min
Apr 29, 3:39 AM EDT	Special Weather Statement	PHI	Caroline	36 min

Nearby

Special Marine Warnings in New Jersey, 2017 Every special marine warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.